Projection stage lighting system

The invention discloses a projection stage lighting system which comprises a lamp socket, a rocker arm connected with the lamp socket, and a lamp cap movably connected with the rocker arm. The lamp cap comprises at least one projector, a lamp cap support, and at least one light-emitting diode (LED) pattern light which is arranged on the lamp cap support. According to the projection stage lighting system, the stage lighting mode is increased through combining the projector with the LED pattern light; and the projection stage lighting system has high flexibility and strong function and can achieves a rich and colorful lighting effect on a stage through projection, thus improving the live atmosphere and meeting the growing lighting requirements on stage lighting.